i would like to ask about how true is this. I often hear people telling pregnant women to be careful not to fall from stairs or other higher part which might cause miscarriage but if the fall is not that worst, they said that it might cause damage to the babies mouth resulting it to be cleft lip or cleft palate.

is this true? I once heard that our babies inside our tummy during our pregnancy were sucking their thumb which explains that if a pregnant woman fall to the ground, the impact results damage to the lips of the baby.

i would like to ask for your medical explanation on this.